Oracle Linux 호스트 네임

• OCI를 처음 사용해봄
• Oracle Linux를 사용할 때 호스트네임 변경 시 재부팅하면 다시 원복 된다
• 원복되지 않고 사용할 수 있는 방법 가이드

$ vi /etc/oci-hostname.conf 

# This configuration file controls the hostname persistence behavior for Oracle Linux
# compute instance on Oracle Cloud Infrastructure (formerly Baremetal Cloud Services)
# Set PRESERVE_HOSTINFO to one of the following values
#   0 -- default behavior to update hostname, /etc/hosts and /etc/resolv.conf to
#        reflect the hostname set during instance creation from the metadata service
#   1 -- preserve user configured hostname across reboots; update /etc/hosts and
#           /etc/resolv.conf from the metadata service
#   2 -- preserve user configured hostname across instance reboots; no custom
#        changes to /etc/hosts and /etc/resolv.conf from the metadata service,
#        but dhclient will still overwrite /etc/resolv.conf
#   3 -- preserve hostname and /etc/hosts entries across instance reboots;
#        update /etc/resolv.conf from instance metadata service


PRESERVE_HOSTINFO=0  ### 2로 변경해야함 ###